Russia's Victor Ahn won his fourth Olympic gold medal in short track on Saturday when he stormed to victory in the men's 1000m.
Ahn, who won three golds for his native South Korea at the 2006 Turin Olympics before switching nationality, won in a time of 1min 25.325sec.
Fellow Russian Vladimir Grigorev won silver with Sjinkie Knegt of the Netherlands finishing in third place.
Canada's Charles Hamelin, who had won the 1500m, fell in the semi-finals.
China's Zhou Yang defended her Olympic Games short track title when she triumphed in the 1,500m.
Zhou, third in the World Cup rankings this season, came good when it mattered most.
The 22-year-old clocked 2min 19.140sec to edge 17-year-old South Korean Shim Suk-Hee, who was second at the world championships, with Italy's Arianna Fontana claiming bronze.